Answer:
Islam and Judaism.
Step-by-step explanation:
Judaism, Christianity, and Islam have many similarities.
All three are monotheistic, use parts of the Old Testament as sacred text, give historical and religious importance to the city of Jeruzalem, believe in the afterlife (with a place like heaven and hell), have Abraham as a patriarch, present the idea of sin and commandments. All of these also feature holy books, namely the Bible (Christian), the Koran (Muslim) and the Torah (Judaism). Moreover, they are among the major religions in terms of number of adherents.